On 1/19/2012 5:22 PM, Paul H. Hargrove wrote:
Minor documentation nit, which might apply to the 1.5 branch as well
(didn't check).
README says:
- Open MPI does not support the Sparc v8 CPU target, which is the
default on Sun Solaris. The v8plus (32 bit) or v9 (64 bit)
targets must be used to build Open MPI on Solaris. This can be
done by including a flag in CFLAGS, CXXFLAGS, FFLAGS, and FCFLAGS,
-xarch=v8plus for the Sun compilers, -mcpu=v9 for GCC.
However, following that instruction w/ Sun Studio 12 Update 2 yields:
cc: Warning: -xarch=v8plus is deprecated, use -m32 -xarch=sparc instead
for every single compilation.
I vaguely recall noting this once before, perhaps 2 years or so.
Additionally, it appears that the "Sun" example is for the 32-bit ABI
and the "GCC" example for the 64-bit ABI.
Actually I think the whole comment is incorrect (at least from Solaris
Studio 12u2 on) in that the default is no longer SPARC v8 target and
that one can actually specify just -m32 and -m64 without the -xarch
option. So I wonder if we should just strike that whole block of text
from the README.
Oracle
Terry D. Dontje | Principal Software Engineer
Developer Tools Engineering | +1.781.442.2631
Oracle *- Performance Technologies*
95 Network Drive, Burlington, MA 01803
Email terry.don...@oracle.com <mailto:terry.don...@oracle.com>
